/**
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
 * with the License.  You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package org.apache.hadoop.util;

import org.apache.hadoop.metrics.util.MBeanUtil;

import javax.management.NotCompliantMBeanException;
import javax.management.ObjectName;
import javax.management.StandardMBean;

/** 
 * Allows for easier handling of MBean instances.
 */
public abstract class BeanTracker {

  protected ObjectName beanName;
  protected String name;
  protected String serviceName;

  /**
    @param serviceName
  */
  public BeanTracker(String serviceName) {
    this.serviceName = serviceName;
  }

  public void register(Object beanObject) {
    StandardMBean bean = this.createBean(beanObject);
    beanName = MBeanUtil.registerMBean(serviceName, name, bean);
  }

  public void unregister() {
    if (serviceName != null && name != null) {
      MBeanUtil.unregisterMBean(beanName);
    }
  }

  protected abstract StandardMBean createBean(Object beanObject);

}
